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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_VCL_INC_SALBMP_HXX
#define INCLUDED_VCL_INC_SALBMP_HXX
#include <tools/gen.hxx>
#include <tools/solar.h>
#include <vcl/checksum.hxx>
#include <vcl/BitmapAccessMode.hxx>
#include <vcl/BitmapBuffer.hxx>
#include <vcl/bitmap/BitmapTypes.hxx>
#include <com/sun/star/rendering/XBitmapCanvas.hpp>
#include <basegfx/utils/systemdependentdata.hxx>
#if defined MACOSX || defined IOS
#include <premac.h>
#include <CoreGraphics/CoreGraphics.h>
#include <postmac.h>
#endif
struct BitmapBuffer;
class Color;
class SalGraphics;
class BitmapPalette;
struct BitmapSystemData;
enum class BmpScaleFlag;
extern const sal_uLong nVCLRLut[ 6 ];
extern const sal_uLong nVCLGLut[ 6 ];
extern const sal_uLong nVCLBLut[ 6 ];
extern const sal_uLong nVCLDitherLut[ 256 ];
extern const sal_uLong nVCLLut[ 256 ];
class VCL_PLUGIN_PUBLIC SalBitmap
{
public:
SalBitmap()
: mnChecksum(0)
, mbChecksumValid(false)
{
}
virtual ~SalBitmap();
virtual bool Create( const Size& rSize,
vcl::PixelFormat ePixelFormat,
const BitmapPalette& rPal ) = 0;
virtual bool Create( const SalBitmap& rSalBmp ) = 0;
virtual bool Create( const SalBitmap& rSalBmp,
SalGraphics* pGraphics ) = 0;
virtual bool Create( const SalBitmap& rSalBmp,
vcl::PixelFormat eNewPixelFormat) = 0;
virtual bool Create( const css::uno::Reference< css::rendering::XBitmapCanvas >& rBitmapCanvas,
Size& rSize,
bool bMask = false ) = 0;
virtual void Destroy() = 0;
virtual Size GetSize() const = 0;
virtual sal_uInt16 GetBitCount() const = 0;
virtual BitmapBuffer* AcquireBuffer( BitmapAccessMode nMode ) = 0;
virtual void ReleaseBuffer( BitmapBuffer* pBuffer, BitmapAccessMode nMode ) = 0;
virtual bool GetSystemData( BitmapSystemData& rData ) = 0;
virtual bool ScalingSupported() const = 0;
virtual bool Scale( const double& rScaleX, const double& rScaleY, BmpScaleFlag nScaleFlag ) = 0;
void DropScaledCache();
virtual bool Replace( const Color& rSearchColor, const Color& rReplaceColor, sal_uInt8 nTol ) = 0;
virtual bool ConvertToGreyscale()
{
return false;
}
virtual bool InterpretAs8Bit()
{
return false;
}
virtual bool Erase( const Color& /*color*/ )
{
return false;
}
// Optimized case for AlphaMask::BlendWith().
virtual bool AlphaBlendWith( const SalBitmap& /*rSalBmp*/ )
{
return false;
}
virtual bool Invert()
{
return false;
}
#if defined MACOSX || defined IOS
// Related: tdf#146842 Eliminate temporary copies of SkiaSalBitmap when
// printing
// Commit 9eb732a32023e74c44ac8c3b5af9f5424273bb6c fixed crashing when
// printing SkiaSalBitmaps to a non-Skia SalGraphics. However, the fix
// almost always makes two copies of the SkiaSalBitmap's bitmap data: the
// first copy is made in SkiaSalBitmap::AcquireBuffer() and then
// QuartzSalBitmap makes a copy of the first copy.
// By making QuartzSalBitmap's methods that return a CGImageRef virtual,
// a non-Skia SalGraphics can now create a CGImageRef directly from a
// SkiaSalBitmap's Skia bitmap data without copying to any intermediate
// buffers.
// Note: these methods are not pure virtual as the SvpSalBitmap class
// extends this class directly.
virtual CGImageRef CreateWithMask( const SalBitmap&, int, int, int, int ) const { return nullptr; }
virtual CGImageRef CreateColorMask( int, int, int, int, Color ) const { return nullptr; }
virtual CGImageRef CreateCroppedImage( int, int, int, int ) const { return nullptr; }
#endif
BitmapChecksum GetChecksum() const
{
updateChecksum();
if (!mbChecksumValid)
return 0; // back-compat
return mnChecksum;
}
void InvalidateChecksum()
{
mbChecksumValid = false;
}
protected:
void updateChecksum() const;
// helper function to convert data in 1,2,4 bpp formats to a 8/24/32bpp format
enum class BitConvert
{
A8,
RGBA,
BGRA,
LAST = BGRA
};
static std::unique_ptr< sal_uInt8[] > convertDataBitCount( const sal_uInt8* src,
int width, int height, int bitCount, int bytesPerRow, const BitmapPalette& palette,
BitConvert type );
public:
// access to SystemDependentDataHolder, to support overload in derived class(es)
virtual const basegfx::SystemDependentDataHolder* accessSystemDependentDataHolder() const;
// exclusive management op's for SystemDependentData at SalBitmap
template<class T>
std::shared_ptr<T> getSystemDependentData(basegfx::SDD_Type aType) const
{
const basegfx::SystemDependentDataHolder* pDataHolder(accessSystemDependentDataHolder());
if(pDataHolder)
return std::static_pointer_cast<T>(pDataHolder->getSystemDependentData(aType));
return std::shared_ptr<T>();
}
template<class T, class... Args>
std::shared_ptr<T> addOrReplaceSystemDependentData(Args&&... args) const
{
const basegfx::SystemDependentDataHolder* pDataHolder(accessSystemDependentDataHolder());
if(!pDataHolder)
return std::shared_ptr<T>();
std::shared_ptr<T> r = std::make_shared<T>(std::forward<Args>(args)...);
// tdf#129845 only add to buffer if a relevant buffer time is estimated
if(r->calculateCombinedHoldCyclesInSeconds() > 0)
{
basegfx::SystemDependentData_SharedPtr r2(r);
const_cast< basegfx::SystemDependentDataHolder* >(pDataHolder)->addOrReplaceSystemDependentData(r2);
}
return r;
}
private:
BitmapChecksum mnChecksum;
bool mbChecksumValid;
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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